sound: oxygen: handle cards with missing EEPROM

commit 92653453c3015c083b9fe0ad48261c6b2267d482 upstream.

The card model detection code introduced in 2.6.30 that tries to work
around partially broken EEPROM contents by reading the EEPROM directly
does not handle cards where the EEPROM has been omitted.  In this case,
we have to use the default ID to allow the driver to load.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-and-tested-by: Ozan Çağlayan <ozan@pardus.org.tr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index 312251d396965404b96311bcc7cda92f409b600b..9a8936e207448e792218d1c3aee804fb09db30e6 100644 (file)
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -260,6 +260,9 @@ oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
         * chip didn't if the first EEPROM word was overwritten.
         */
        subdevice = oxygen_read_eeprom(chip, 2);
+       /* use default ID if EEPROM is missing */
+       if (subdevice == 0xffff)
+               subdevice = 0x8788;
        /*
         * We use only the subsystem device ID for searching because it is
         * unique even without the subsystem vendor ID, which may have been